JavaScript PropTypes uses PropTypes.any instead of isRequired

This is quite different from the other type conversions and since I couldn't find an issue raising this concern I'm opening this issue.

## input
```json
{
"type": "object",
"required": [ "disabled" ],
"properties": {
"type": {
"type": "string",
"enum": ["primary", "secondary"]
},
"disabled": { "type": "boolean" }
}
}
```
## current
```js
import PropTypes from "prop-types";

let _Component;
const _Type = PropTypes.oneOfType(['primary', 'secondary']);
_Component = PropTypes.shape({
"disabled": PropTypes.bool,
"type": PropTypes.oneOfType([_Type, PropTypes.any]),
});

export const Component = _Component;
```
## expected
```js
import PropTypes from "prop-types";

let _Component;
_Component = PropTypes.shape({
"disabled": PropTypes.bool.isRequired,
"type": PropTypes.oneOfType(['primary', 'secondary']),
});

export const Component = _Component;
```